Oil-pump.



F. R. PORTER.

OIL PUMP.

APPLmATloN FILED APH.12.1916.

Patented Sept. 4, 1917.

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FDLEY R. PORTER., OF PORT JEFFERSON, NEW YORK, ASSIGNOR T0 FINLEY ROBERT- SON PORTER COMPANY, INC., 0F PORT JEFFERSON, NEW YORK, A CORPORATION OF DELAWARE.

OIL-PUMP.

Specication of Letters Patent.

Patented Sept.. t, 191'?.

Application led April 12, 1916. Serial No. 90,662.

To all 'whom t may concern:

Be it known that I, FINLEY R. PORTER, a citizen of the United States, and resident of Port Jefferson, in the county of Suffolk and- State of New York, have invented a new and useful Improvement in Oil-Pumps, of which the following is a specification.

In actual practice, it has been very diiicult, if not impossible, to successfully produce a circulating oil pump for internal combustion engines which will work eiiciently at both low and high engine speeds. When the pump has been designed especially for pumping oil at low engine speeds, it has been ineiiicient or inoperative to pump the oil at high engine speeds and vice versa.

The object of my invention is to produce an oil pump of the above character which will be efficient at all speeds, the pump come prising reciprocating and rotary elements, the reciprocating element serving to positively and el'iiciently pump the oil at low s eeds and the rotary element serving to e ciently pump the oil by centrifugal action at high speeds.

My invention more particularly includes a casing having an axially arranged inlet and a peripherally arranged outlet, in which cas ranged inlet, said barrel having one or more chambers therein with inlet and outlet ports arranged to be brought into and out of communication with the casing inlet and outlet as the barrel is rotated; a plunger/being located in each' chamber and reciprocated as the barrel is rotated by fixed cams having inclined parallel faces along which the opposite ends of the plunger travel.

A practical embodiment of my invention is represented in the accompanying drawings, in which Figure 1 represents the oil pump in side elevation,

Fig. 2 is a vertical section taken in the plane of the line A-A of Fig. 1.

Fig. 3 is a vertical section taken in the plane of the line B-B of Fig. 2, and

Fig. 4 is a horizontal section taken in the plane of the line C-C of Fig. 1.

The oil pump casing 1 is provided with an uprising bracket arm 2 for facilitating the attachment of the pump to any suitable support. This casing 1 is also provided with a clrcumferential flange 3 near its bottom ing a barrel rotates around the axially arwhich fits on which the ring 4 of an oil strainer is screw threaded, the screen 5 of the oil stralner serving to cover the bottom of the caslng.

This casing has an intermediate cylindrical bore 6 and upper and lower partly screw threaded bores 7 and 8 forming angular shoulders 9 and l0, respectively. The casing l has also one or more transversely arranged discharge ports extending partway around the intermediate bore 6. In the present instance, where the pump is shown as adapted for discharging the oil through four pipes 1l, 12, 13 and 14, four of these transversely arranged ports 15, 16, 17 and 18 are provided in four different horizontal planes, which ports communicate with their respective discharge pipes 11, 12, 13 and 14a.

Upper and lower cam rings 19 and 20 project into the topand bottom of the intermediate bore 6 and are provided respectively with circumferential flanges 21, 22, engaging the shoulders 9 and 10.

hese cam rings 19 and 20 have parallel inclined inner faces for engaging the upper and lower ends of the oil pump plungers 23, 24, 25, 26, and reciprocating them vertically in their oil chambers 27, 28, 29, 30, respectively, in the barrel 3l, the periphery of the intermediate bore 6 of the casing l.

Each of these reciprocating plungers comprises a head and a stem, the head projecting through the bottom of the barrel into engagement with the inclined inner face of the lower cam ring 20 and the stem projecting through the top of the barrel into engagement with the inclined inner face of the upper cam ring 19.

The barrel 3l has a central bore 32 opening through its bottom, into which bore is introduced an open-ended tube 33 having a screw threaded engagement 34 with the lower cam ring 20, said tube having a suitable head 35 for facilitating the introduction and removal of the tube. vThis tube is provided with a vertically elongated port 36.

The barrel 3l is provided with an uprising shaft 37 by means of which the barrel may be rotated from any desired source of power, as, for instance, from the engine, not shown, in connection with which the pump is to be used.

An upper retainer 38 has a screw threaded engagement with the upper enlarged bore 7, which retainer is 4intended to be screwed down into engagement with the liange 21 of the upper cam ring 19 to hold the cam 5 rin .in position. A suitable bushing 39 may bemterposed between the shaft 37 and the retainer 38, as a bearing for the shaft. A nut 40 may be screwed onto the shaft 37 between the upper face of the cam ring 19 and the retainer 38, which nut may act as a thrust bushing.

A cotter pin 41 may be provided for securing the nut 40 in its adjusted position and a lock ring 42 may be provided for securing the upper retainer in its position.

A lower retainer 43 has a screw threaded engagement with the enlarged lower bore 8 of the casing and engages the liange 22 of the lower cam ring 20 for holding the cam provided for securing the retainer 43 in position.

The, plun r chambers 27, 28, 29, 30, are provided with oil inlet ports 45, 46, 47, 48, lea to the central bore 32 of the barrel and with outlet ports 49, 50, 51, 52, leading to the periphery of the barrel.

The port 36 in the stationary oil inlet tube 33 is sufficiently long to open communication successively from the interior of the tube 33 to the interiors of the plunger chambers through the ports 45, 46, 47, 48.

The outlet ports `49, 50, 51, 52, for these chambers are arranged respectively in the horizontal planes of the discharge ports 15, 16, 17 and 18, and are successively brought into communication with said ports as the barrel is rotated.

It will thus be seen that as the barrel is rotated, the tube 33 and casing l serve to successively open and close communication through the plunger chambers from the interior of the tube 33, viz; the intake side of the pump, to the respective discharge pipes 11, 12, 13 and 14, viz; the discharge side of the pump- It will also be seen that when the pump is being driven at low speeds, as, for instance, at a low engine speed, the oil will be drawn into and forced through the pump positively by the reciprocation of the plungers 23.

It will also be seen that when the pump is driven at high speeds, as, for instance, at high engine speeds, the rotary movement of the barrel, together with the location of the inlet and outlet ports, respectively nearer to and farther away from the axis of rotation, jwill cause the oil to be drawn into and forced from the pump by centrifugal action, thus 60 insuring the proper supply of the oil at high speeds as well as at low speeds by this combmed centrifugal and positive action of the pump.

While I have shown the pump as adapted 65 for the discharge of four streams of oil, it

ring in position. A lock ring 44 may be,

is obvious that it may be arranged for the discharge of one or more streams of oil, as desired.

It is evident that changes may be resorted to in the form, construction and arrange- 7o ment of the several parts without departing from thc spirit and scope of my invention; hence I do not wish to limit myself strictly to the structure herein set forth, but

What I claim is.:- A

1. In an oil pump, the combination with rotary means to pump the oil by centrifugal action at high speeds, of means carried therflgy to pump the oil positively at low 2. In an oil pump, the combination with rotary means to pump the oil by centrifugal action at high speeds, of reciprocating means carlried thereby to pump the oil positively at ow 3. In an oil pump, tlllle cxlmllayination with rotary means to pump t e 0 centrifuga 1 action at high speeds, of means carried thereby to pump the oil positively at low speeds and inlet and outlet ports arranged, respectively, nearer to and farther away from the axis of rotation of the rotary means.

4. Inv an oil pump, the combination with rotary means to pump the oil by centrifugal action at high speeds, of reciprocatingmeans carried thereby to pump the oil positively at low speeds and inlet and outlet ports arranged, respectively, nearer to and farther away from the axis of rotation of the rotary means.

5. In an oil pump, the combination with a rotary element to pump the oil by centrifugal action at high speeds, of a plurality of reciproca elements carried thereby to pump the oil positively at low speeds and inlet and outlet ports respectively, nearer to and farther away from the axis of rotation of the rotary element.

6. In an oil pump, a rotary barrel having an oil chamber with inlet and outlet ports arranged respectively nearer to and farther away from the am's of rotation and a plunger reciprocating in said chamber, whereby the oil is pumped positively at low speeds by the reciprocation of the plunger and is pumped by centrifugal action at high speeds by the rotary movement of the barrel.

7. In an oil pump, a rotary barrel having a plurality of oil chambers with inlet and outlet ports arranged respectively nearer to and farther away from the axis of rotation and plungers reciprocating in said chambers, whereby the oil is pumped to different points positively at low speeds by the reciprocation of the plungers, and is pumped by centrifugal action at high speeds by the rotary movement of the barrel. Y

8. In an oil pump, a casing having an axial inlet and peripheral outlet, a barrel rotating in said casing having a chamber with inlet and outlet ports arranged to be into and out of communication with the casbrought into and out of communication with ing inlet and outlets by the rotary movethe casing inlet and outlet by the rotary ment of the barrel and plungers reciprocatmovement of the barrel and a plunger reing in said chambers whereby the oil is w 5 ciprocating in said chamber whereby the oil pumped to different points positively at low is pumped positively at low speeds and by speeds and by centrifugal action at high centrifugal action at high speeds. speeds.

9. In an oil pump, a casing having' an In testimony, that I claim the foregoing axial inlet and peripheral outlets, a barrel as my invention, I have signed my name this 20 10 rotating in said casing having chambers with twenty-third day of February, 1916.

inlet and outlet ports arranged to be brought FINLEY R. PORTER. 

